664510000000 has 512 divisors, whose sum is σ = 2065494712320. Its totient is φ = 206880000000.

The previous prime is 664509999983. The next prime is 664510000019. The reversal of 664510000000 is 15466.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 769999569 + ... + 770000431.

It is an arithmetic number, because the mean of its divisors is an integer number (4034169360).

Almost surely, 2^664510000000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664510000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032747356160).

664510000000 is an abundant number, since it is smaller than the sum of its proper divisors (1400984712320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664510000000 is an frugal number, since it uses more digits than its factorization.

664510000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 664510000000 its reverse (15466), we get a palindrome (664510015466).

The spelling of 664510000000 in words is "six hundred sixty-four billion, five hundred ten million", and thus it is an aban number.